ARM: dts: msm: correct VDD_GFX GPU frequencies for msm8996v2

Correct the VDD_GFX cpr3-regulator device corner-to-GPU frequency
mapping table so that it is accurate for MSM8996 v2 devices.

Change-Id: Ib7f0d6852696f9adb006e5178bbe4ce1aeeb26b3
Signed-off-by: David Collins <collinsd@codeaurora.org>